Abstract: Herein is described a method for feeding chlorine to a heat exchanger (condenser) for biological fouling control by targeting the feed to only a few tubes at a time. The assembly comprises a manifold surrounded by a seal which directly contacts the condenser tube sheet, thereby feeding chlorine to only a few selected condenser tubes at a time and the seal serves to restrict the flow of water through the tubes, thereby increasing the contact time between the chlorinated water and the fouling mass in the tubes. The manifold, powered by a pneumatic/hydraulic drive, moves across the entire condenser tube sheet so that all tubes are chlorinated for the same duration. A principal advantage of this system is that it allows the feed of relatively high concentrations of chlorine to the selected tubes, but is designed to meet EPA effluent limitations without dechlorination.

Abstract: In an arrangement for mixing a first gas into a main flow of a second gas, comprising a main conduit for said main flow and a plurality of supply conduits for the first gas which open into said main conduit, the supply conduits are arranged as at least one set of three outlet openings. This set consists of a first opening which opens into the main flow perpendicularly to the main conduit wall and two second openings which are arranged so as each to provide a lesser flow rate of the first gas than the first opening and are offset with respect to the first opening. The three openings of the set thus direct the first gas into two contra-rotating circulatory movements, as viewed in the direction of the axis of the main conduit. This mixing arrangement is applicable for example to mixing a hot gas into the gas obtained from an ore pellet drying bed and to mixing a hot gas into a water-laden gas from a desulphurization plant.

Abstract: An apparatus for mixing fluids includes at least one noncircular orifice having unequal major and minor axis dimensions, with the major axis dimension being less than approximately 5 times the minor axis dimension. A first fluid is emitted from the orifice as a jet for mixing with another fluid in a region downstream of the orifice. The mixing region extends downstream a distance at least equal to the minor axis dimension, and then either terminates in a wall in the path of the jet or continues downstream to a total distance of at least approximately 3 times the minor axis dimension. The mixing region has a lateral width of at least 2(a+0.4x) in a direction parallel to the major axis and a lateral width of at least 2(b+0.4x) in a direction parallel to the minor axis, where a and b are one-half the major and minor axis dimensions, respectively, and x is the distance downstream of the orifice.

Abstract: A water-based drilling fluid preparation system having an enclosed mixing chamber, a salt barrel, and piping means for selectively directing fluids exiting the mixing chamber means through the salt supply and to and from a suction pit. The mixing chamber has a first inlet for supplying a first fluid, such as drilling muds, into the mixing chamber, a second inlet for supplying water into the mixing chamber, and a third inlet means for supplying a heated fluid into the mixing chamber, wherein the drilling fluids are mixed in a selectively heated environment.

Abstract: The present invention relates to a method and devices for mixing at least two individual streams having different variables. In order to produce a low-loss, effective mixing within a short flow section, at least one eddy impulse is produced in the cross section of flow of at least one individual stream, which impulse spreads out downstream transverse to the direction of flow to form a discrete eddy system whose components transverse to the main direction of flow overlap into the other flow cross section of the other individual stream. This eddy impulse can be produced either by at least one curved surface or by at least one edge of a surface or of a body. The eddy impulse is preferably produced by two burble (flow break-away) edges of a delta-shaped insert element which extend at an acute angle to each other.

Abstract: An apparatus combines streams from different pipelines having different flow rates, concentrations, and pressure. The junction comprises a directed vortex formed by a conically-shaped enclosure having a closed base with one pipeline inlet through the base at the axis of the cone. Another higher pressure inlet is positioned on the periphery of the cone near the base and at a tangent to the covered cross-section at the point of entry. The high pressure inlet is also at an angle to the cross-section and directed toward the outlet at the apex of the cone. A fluid dewatering apparatus may be attached to the outlet to maintain a predetermined concentration in the case where one or more inlets contain a slurry.

Abstract: This invention relates to a process for injection of fluid e.g. slurry into e.g. flue gases, and a nozzle device for the accomplishment of the process. The process according to the invention is characterized in that a thin stream of fluid e.g. slurry is injected into a wider stream of gas to form disintegrated drops, at which the fluid stream is peeled off on its way into the gas stream, the fluid stream is made to turn 180.degree.

Abstract: Systems for mixing gaseous medium streams at different temperatures are for changing the direction of flow of a stream which alleviate the effect of pressure losses. A plurality of hollow airfoil shaped vanes are positioned within a first gaseous stream, and the second stream is conveyed through the hollow vane and discharged into the first stream through a slot at the trailing edge of the vane. Fixed or movable flow direct the rate and direction of the discharge flow.

Abstract: A method and apparatus for producing from two different liquid input streams which are at different temperatures, a single output stream with a selectable, low-thermal-noise, regulated temperature which is intermediate the input streams' temperatures. The invention operates with successive, recurrent, fixed-length operating cycles, during each of which a variable-length pulse of liquid from each stream, exclusively, is permitted to flow. Temperature monitoring of the resulting blended output stream effects continuous adjustment of the respective pulse-lengths (or duty cycles) of such alternate differing-temperature pulses to maintain the desired regulated temperature.

Abstract: Pressure cleaning apparatus (10) comprising a pair of liquid containers at substantially the same level, including a water container (11) and a detergent container (12), a positive displacement pump (14) located below said liquid containers and having an inlet and an outlet, and an aspirator mixer (13) for supplying a mixture of water and detergent to the pump, comprising an outer tube (60) having first and second ends and a lateral inlet connection (42) near the first end, an inner tube (47) projecting into the outer tube in sealed relation to the first end, and having a first end extending past the lateral inlet, piping connecting (41) the second end of the outer tube to the inlet of the pump, connecting (48, 49, 32) the inner tube to the bottom of the detergent container, and connecting (43, 44, 45, 30) the lateral inlet to the bottom of the water container, slow operating check valve mechanism (63, 64, 65) operative to prevent continuous flow of liquid from the water container to the liquid container, and

Abstract: One non-propelled fluid resident in a reservoir is sucked into the flow path of a further fluid in transit propelled by fluid pressure. This is achieved by means of inducing a spiral cyclone path flow pattern in the propelled fluid to create a converging vortex with a turbulent mixing zone into a linear output transit line. The pressure at the vortex zone is reduced significantly from atmospheric to thereby produce a strong suction propellant force bringing the stored fluid into the turbulence mixing zone. The stored fluid is introduced axially in line with the cyclone axis and linear output transit line which receives thoroughly mixed fluids in substantially constant proportions over significant changes in pressure of the propelled fluid. Thus, the mixer device is ideal for dispensing insectides with a garden hose, detergents into a dishwasher, chlorine into a swimming pool, etc.

Abstract: Gas is mixed into a main flow of gas in a cylindrical conduit by means of one or more feed conduits. In order to achieve good mixing and avoid concentrations of the added gas, the feed conduit(s) have two openings for outflow of the added gas, which openings are spaced from the wall of the cylindrical conduit, are symmetrically located with respect to the axis of the cylindrical conduit and lie in a plane perpendicular to that axis. The axis of these openings are mutually spaced by less than one half of the internal diameter of the conduit. The added gas emerges from the two openings in mutually opposite parallel directions, so that it tends to circulate around the axis. The arrangement has been found advantageous when applied to the feed of gaseous fuel to hot blast stoves of a blast furnace.

Abstract: A mixing block, for attachment to a combustion chamber in which a solid body or material is briefly subjected to high temperature and pressure by the detonation of an explosive gas mixture, is composed of three block-like parts clamped together by screws. This enables the relatively long channels subject to explosion stresses to be constituted of lengthwise bores in the middle block connected by milled short cross-connections. The protective cutoff valve is an automobile type valve set in the upper block piece, which can also have an insert of temperature resistant material adjacent to the mixing chamber portion of the middle block. The ignition device is not shown in the drawing, but is usually provided in the mixing block structure. In the section of the mixing block illustrated in the drawing only one of the gas connections to the mixing chamber (19) is shown.

Abstract: A method of mixing fluids in a well bore employing a tubing string with a mixing valve disposed thereon. The well bore is sealed below the mixing valve, a first fluid then being pumped down the tubing string and a second fluid being pumped down the well bore annulus. By varying pressures and through the optional use of a circulating valve in conjunction with the mixing valve, the fluids may be mixed in the well bore or in the tubing string.

Abstract: The steam throttle valve has water injection ducts disposed about the valve axis. The ducts are situated between two abutting flanges of a valve cage and a valve spindle guide. The ducts are in the form of grooves in the flange while the adjacent peripheral surface of the flange is plain. The valve cage forms a replaceable wearing component and the configuration of the water injection ducts avoids thermal stress cracks in the duct zone.

Abstract: A mixing valve for use in cementing, fracturing or other treatment of a well. The valve, which may be mounted in a pipe string, comprises a center mandrel surrounded by a coaxial housing having circumferentially spaced apertures therethrough. A packer cup surrounds the center mandrel below the apertures in the housing, and seals the annulus between the mandrel and housing when the pressure of fluid through the bore of the mandrel exceeds that on the outside of the chamber. When mixing fluids, it is only necessary to pressure the fluid outside the housing to collapse the packer cup against the mandrel, the fluid from the outside then entering the stream flowing from the mandrel bore. A method of mixing fluids utilizing the valve of the present invention is also disclosed.

Abstract: Method and apparatus for introducing finely divided gas bubbles into a lixiviant used for in-situ mining of minerals containing metal values, such as copper values. The lixiviant is supplied to a plurality of porous tubes formed of sintered powdered metal while a gas is supplied under pressure about the tubes to cause the gas to penetrate into the interior of the tubes in the form of fine bubbles which are wiped from the interior of the tubes by the lixiviant passing therethrough.The method and apparatus can be advantageously employed in situations where it is desirable to perform in-situ mining with an oxidizing lixiviant. In these cases oxygen is supplied under pressure about the tubes.

Abstract: An oil-water emulsifier comprises a Venturi member having an inlet for receiving oil, an oil-water emulsion outlet and an opening extending therethrough from the inlet to the outlet. The opening of the Venturi member comprises a diameter-reducing portion which connects to a throat portion having a substantially smaller diameter than the inlet, the throat portion being connected to an expanding portion extending from the throat to the outlet, the diameter of the outlet of the opening being substantially greater than that of the throat portion. A plurality of water injection holes extend from the outer periphery of the Venturi member to the throat portion so as to be in communication with the oil flowing through the throat portion, the injection holes being preferably substantially perpendicular to the direction of oil flow through the throat portion. Also disposed is an oil-burner boiler system incorporating the above-described oil-water emulsifier.

Abstract: A method and apparatus for admixing liquid with concentrated, shear-thinable stiff pastes of photographic processing compositions to form photographic processing solutions, in which the pastes are thinned by shear forces and contacted with the diluting liquid under turbulent mixing conditions to dissolve the concentrate in the liquid and thereby form the solution. The paste, which does not flow and resists deformation under conditions of low shear, is displaced through an orifice where conditions of high shear render it free flowing and form a stream. One or more liquid jets are directed at the stream with sufficient force to disperse the concentrate and bring about intimate contact between the liquid and the composition under turbulent mixing conditions. A static mixer then completes the dissolution of the chemicals in the liquid.

Abstract: A unique and novel mixing device to effect an intense and rapid mixing of two fluids which is comprised of a venturi tube connected to the first fluid and a feed member disposed around the venturi tube through which the second fluid can flow. The feed member has one or more chambers which connect with the venturi tube through which the second fluid can be admixed with the first fluid. A baffle is positioned axially opposite the exit of the venturi tube to promote additional mixing.

Abstract: A lighting fixture is disclosed. The lighting fixture comprises a top and side and end walls, means for supporting a light source in the fixture to emit light from a light-emitting side thereof, and conduit means operatively associated with the fixture so that a heat transfer fluid circulated therethrough is in heat transfer relationship with the fixture. The fixture has a path including at least one opening therein through which air can flow from the exterior on the light-emitting side to the interior, and to the exterior opposite the light-emitting side, and a damper movable between an open position and a closed position, and effective in the closed position, but ineffective in the open position, to prevent the flow of air from the interior of the fixture to the exterior opposite the light-emitting side.

Abstract: A versatile portable fluid dispensing, manually controlled gun with instant selectivity of hard, soft or foam flow of liquids, either of water or a solution, with or without entrainment of fluid such as air and with or without a foaming flow of the fluid whereby each of a great many different relations of discharge can be selected with a versatile solution discharge nozzle that provides selectively changeable liquid solid jet streams or soft flows of liquids with or without entrainment of a fluid such as air; and selectively with entrainment of air operable either with or without a foaming agent in the liquid. Instant controls interchangeably operated provide any one of twelve different dispensing relations with water alone or with a chemical foaming agent, each supplied separately or together as a mixture; in each of these phases, namely jet flow, soft flow and foam flow.

Abstract: A method and apparatus are provided for maintaining polymer particles in readily recoverable, discrete form, and for injecting the particles into a pipeline hydrocarbon by disposing particulate polymer within a storage hopper having a cone bottom and an auger extending upwardly from the bottom, rotating the auger to cause the polymer particles to revolve in the hopper, reversing the rotation of the auger to pass polymer particles downwardly into a mixing chamber below the hopper, the particles passing through a rotary metering valve, or optionally, a bin activator, intermediate storage and rotary metering valve at the upper end of the chamber, simultaneously spraying a liquid such as oil or water tangentially in the chamber optionally agitating the chamber and removing a slurry of particulate polymer and the liquid from the chamber and injecting the slurry into a pipeline hydrocarbon.

Abstract: Disclosed is a method of pumping and preventing plugging for water-in-oil emulsion explosives within conduits in which the pumping is interrupted and a lubricating fluid is used that moves in an annular stream around the emulsion. The lubricating fluid provided by the invention which comprises an aqueous salt solution allows interruption of the pumping without the occurrence of plugging in the conduit.

Abstract: Liquid is collected and gasified within the same pressure sealed chamber from which it is displaced. The liquid is gasified toward saturation under a high pressure for a limited time by recirculation of the gas through the chamber. Flow control valves establish a closed circuit through which recirculation occurs while the chamber is maintained pressurized as well as to effect displacement of gas saturated liquid from the chamber during spaced intervals of time while the chamber is depressurized.

Abstract: A process for supplying a liquid such as a liquid containing chlorine to a stream of another liquid such as a cooling water stream is disclosed wherein the stream to which the liquid is fed is passed in a generally horizontally disposed conduit and the liquid being fed thereto is introduced into a stationary manifold disposed thereabove which manifold is in fluid communication with the plurality of vertically disposed discharge hoses of differing lengths each of which has an outlet opening, the oulet opening is being substantially evenly distributed throughout the cross-section of the conduit. Also disclosed is an apparatus for effecting such a process.